The Trump administration said Monday it had reached a new, 16-year trade deal with Mexico, setting in motion a rapid chain of events that could redraw the world’s largest trade agreement.

The ultimate scope of the deal could hinge on whether Canadian Prime Minister Justin Trudeau decides to join the agreement after months of feuding with President Donald Trump.

White House officials said the agreement, centered largely on manufacturing, would help American workers by making it harder for countries to ship cheap products through Mexico and then into the United States.

报道中的hinge on就是“取决于”，例如：

A tobacco grower’s income for the year may hinge on the weather in a few summer weeks.